Represetation of data, and structural equality

Represetation of data, and structural equality

[murthy]

If I define a type,

           type foo = GOO of int;;

will it be implemented as an unboxed integer?

Thanks,
--chet--

Represetation of data, and structural equality

[@ 1992-12-14 8:52 UTC (permalink / raw)]

Dear Chet,

Your question canot be answered in a theoretic framework: it depends
on the compiler you use. In Caml V3.1 the answer is yes, in Caml Light
the answer is no:

>       Caml Light version 0.5

#type foo = GOO of int;;
Type foo defined.
#let x = GOO 1;;
x : foo = GOO 1
#let y = GOO 1;;
y : foo = GOO 1
#x == y;;
- : bool = false
#
   CAML (decstation) (V3.1) by INRIA Thu Oct 15

#type foo = GOO of int;;
Type foo is defined

#let x = GOO 1;;
Value x is (GOO 1) : foo

#let y = GOO 1;;
Value y is (GOO 1) : foo

#x == y;;
true : bool

Pierre Weis
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